LIS Tactical Decision Aid Development and Support of Laser Sensing of Mines, IEDs, and Explosives
Abstract
AbstractMines and improvised explosive devices (IEDs) are designed and constructed from mechanical components such that the compos"ite system has an acoustic impedance that is significantly less than soils. This impedance contrast is fundamental to the acoustic detection with laser counter-min (CM) and counter-IED (CIED) sensors. With continued development and advancement of these laser CM and CIED systems that use acoustic excitation, there is a need to predict the performance of these systems for demonstration and field exercises. When targets are acoustically excited, the acoustic impedance or frequency response of the target is key to understanding the vibrational response the laser read-out signature. Acoustical characterization of a target~s response to sound is used to model the vibrational response of the target. It is this vibrational response to which the interferometer responds or yields detection and characterization information of the target. The understanding of the acoustic response from buried mines and IEDs has advanced so that it is now possible to develop a physics-based performance model or a preliminary Tactical Decision Aid (pTDA). The pTDA inputs include target and soil impedances and target depths. It isnecessary to characterize and develop look up tables or libraries of the target impedances and the soil elasticities. Further, the impact of soil moisture on ground soil impedance must be incorporated in the detection model as real-time day of measurement input. The University of Mississippi proposes the development of LIS acoustic performance model for detection prediction capabilities for planning and evaluating LIS field demonstrations. This effort will continue to support target characterization modeling and measurements, support acoustic andmechanical source designs and performance specifications and measurements, support flight and ground-based tests by providing acoustic and seismic ground truth, and participate i"n ONR planning, programming and reviews, hardware design, flight and field tests, data collections, andanalysis.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 07, 2019
- Source ID
- N000141912118
Entities
People
- James Sabatier
Organizations
- Office of Naval Research
- United States Navy
- University of Mississippi